
On The Brink with Castle Island
Hosts Matt Walsh and Nic Carter of Castle Island Ventures explore news and deals in the public blockchain space and talk to some of the leading experts in the industry. Learn more and stay up to date at CastleIsland.vc and follow on twitter @CastleIslandVC
Latest episodes

May 26, 2023 • 44min
Weekly Roundup 05/26/23 (The real Greenidge story, MEV on Bitcoin, Fed data on adoption) (EP.427)
Matt and Nic return for another week of news and deals. In this episode: Validators sign up to stake ETH post merge Will there be MEV on Bitcoin? What's the deal with Worldcoin? Is the wash sale tax loophole stalling the debt ceiling negotiations? Have ordinals changed Bitcoin culture? The Fed releases new data on crypto adoption in the U.S. Paradigm adds AI to their mandate Whip Tom Emmer and Rep Darren Soto introduce the Securities Clarity Act The NYT reports that prosecutors have a mountain of evidence against SBF Greenidge is vindicated regarding activist claims Ripple vs the SEC Content mentioned: The Federal Reserve, Economic Well-Being of U.S. Households in 2022 Coindesk, The Bitcoin Mining Debate Is Ignoring the People Most Affected Sponsor notes: Coin Metrics STATE OF THE NETWORK - A Claim in the Ether: Tracking the Soaring Demand for Ethereum Staking In this week’s issue of State of the Network, we examine essential data and metrics highlighting the current state of the Ethereum staking ecosystem. The transition to Proof of Stake and the successful launch of the Shapella upgrade have bolstered confidence in the Ethereum ecosystem, but a variety of regulatory and technical risk factors still pose challenges.

May 19, 2023 • 44min
Weekly Roundup 05/19/23 (Texas PoR bill, the Hinman test revisited, what's up with Worldcoin?) (EP.426)
Nic and Matt return for another week of news and deals. In this episode: Nic and Matt reminisce on the Bitcoin Miami conference Ripple wins a key victory over the SEC in the Hinman test Texas passes a proof of reserve bill The SEC alleges that Filecoin is a security What's the deal with Worldcoin? How biometrics and blockchain can help with AI Regulating AI Tether is buying Bitcoin John Ray is trying to claw back more funds Is Michael Lewis an innocent bystander in the FTX situation? Sponsor notes: Coin Metrics STATE OF THE NETWORK - Market Liquidity Review The current market environment for digital assets is characterized by complexity, owing to the presence of regulatory uncertainty, an onslaught of exogenous macro events, and continued shifts in the preferred exchange venues among traders. In this edition of State of the Network, the Coin Metrics team zooms in on essential trading volume & market data trends to contextualize the current crypto market environment.

May 17, 2023 • 42min
FactSet + CoinMetrics on Institutional Crypto Data (EP.425)
Chris Ellis, Head of Strategic Initiatives at FactSet and Tim Rice, founder of Coin Metrics join the show. In this episode we discuss: The partnership between FactSet and Coin Metrics how the companies are jointly going to market. How FactSet thinks about partnerships and how digital assets has evolved as an area of focus at the company. The features and functionality that FactSet users are asking for as it relates to crypto/digital asset data. The future of asset tokenization and the regulatory landscape in the United States. On-chain data and how Coin Metrics sees this category evolving. To learn more about the FactSet/Coin Metrics partnership visit: https://investor.factset.com/news-releases/news-release-details/factset-and-coin-metrics-collaborate-deliver-digital-assets-data To learn more about Coin Metrics visit www.coinmetrics.io

May 12, 2023 • 44min
Weekly Roundup 05/12/23 (BRC20 mania, are high fees good for Bitcoin, the Wyoming stable token) (EP.424)
Matt and Nic return for another week of news and deals. In this episode: BRC20 PEPE versus ERC20 PEPE Is PEPE an alt right coin? What’s driving up fees on Bitcoin? The relationship between HEX, XEN, and VPMX Bitcoin’s circular firing squad The upside of high fees in Bitcoin Why the White House’s DAME mining tax is counterproductive What is the $18b tax loophole the Biden admin thinks crypto investors are taking advantage of? What’s the deal with blue checks? The difficulty of bootstrapping new social networks Bittrex is filing for bankruptcy in the US The Democratic messaging on the crypto hearing The US chamber of Congress files an amicus brief in the Coinbase v SEC case Texas passes a bill to support flare gas mining The Wyoming Stable Token gets closer to becoming a reality The US Chamber of Commerce amicus brief in the Coinbase v SEC case Can the US government afford these interest rates? Matt and Nic solve the debt crisis Content mentioned in this episode: Reuters, Cryptoverse: Digital coins lure inflation-weary Argentines and Turks Nic Carter in Coindesk, The White House’s Bitcoin Mining Tax Undermines Itself Two Ocean Trust, Revisiting the Case for Bitcoin Nick Neumann at Casa, Hands Off our Self-Custody Sponsor notes: Coin Metrics State of the Network - Bidding on Bytes: A Bitcoin & Ethereum Fee Market Update In this week’s report, the Coin Metrics team examines the underlying causes of the recent surge in transaction fees on Bitcoin and Ethereum and explore the implications of this development for the future.

May 8, 2023 • 40min
Steven Walbroehl (Halborn) on Blockchain Cybersecurity (EP.423)
Steven Walbroehl, the co-founder and CTO of Halborn joins the show. In this episode we discuss: Steven’s crypto origin story and how he began tinkering with public blockchains. How Halborn’s work differs across traditional financial services customers versus decentralized organization customers. Basic recommendations for companies entering the public blockchain ecosystem. Halborn’s recent discovery of a zero-day exploit impacting 280 public blockchains. Views on market manipulation and game theory exploits. Halborn’s Seraph digital notary product and how it is keeping DeFi protocols safe. To learn more about Halborn visit www.halborn.com

May 5, 2023 • 38min
Weekly Roundup 05/05/23 (Bank apocalypse, Biden’s miner tax, Bhutan’s crypto ambitions) (EP.422)
Matt and Nic are back with another week of news and deals. In this episode: Updates on South Shore Bar Pie The CIV boys consider new sponsors Regional banks keep failing Is the turmoil in the bank sector deflationary or inflationary? How does the Fed end the banking crisis? McHenry’s stablecoin bill Biden proposes a 30% tax on Bitcoin miners Why Biden’s DAME tax is counterproductive RFK Jr’s pro-crypto takes Nic throws his hat in the ring for RFK Jr Gensler running for Senate in Maryland/ Where in the world are the FTX executives FTX attempts to claw back funds from Genesis FTX debtors stumble on Mysten Labs Is summary judgment in the Ripple SEC case almost due? Nate Chastain is found guilty of insider trading Poloniex settles with OFAC OpenX is reprimanded by Dubai for not registering Coinbase launches in Bermuda Bhutan has been mining Bitcoin since 2020 NYMAG spills the beans about Protego CIV is throwing a pickleball event at BTC Miami Content mentioned in this episode: Jen Wieczner in NYMAG, Is the Federal Government Trying to Kill Off Crypto? Sponsor notes: Coin Metrics State of the Network - MakerDAO’s Dai Dilemma: As one of the longest-standing DeFi protocols, Maker has held strong as the maintainer of the decentralized stablecoin Dai. Still, the protocol faces headwinds, and MakerDAO stakeholders must make major decisions about governance and risk management.

May 2, 2023 • 42min
Simon Forster and Duncan Trenholme (TP ICAP) on Crypto Market Structure (EP.421)
Simon Forster and Duncan Trenholme of TP ICAP join the show. In this episode we discuss: - TP ICAP's journey in the crypto / blockchain space. - The market structure for institutional cryptoasset trading. - The future of tokenization and the types of assets that are likely to be represented on chain. - The regulatory landscape and how this will shape the pace of building in the industry. To learn more about TP ICAP and their strategy visit: www.tpicap.com/digitalassets

Apr 28, 2023 • 43min
Weekly Roundup 04/28/23 (First Republic in trouble, Hong Kong embraces crypto, did crypto cause the banking crisis?) (EP.420)
Matt and Nic return for another week of news and deals. In this episode: What’s the deal with south shore bar pie? We review Consensus in Austin Nic’s 2022 Coin Center dinner incident Nic’s gas siphoning incident First Republic appears heading for collapse Why was First Republic given time to save itself but not Signature? Block partners with Yellowcard for cross-border African payments Open Exchange’s purported investors deny investing in the business Coinbase is setting up operations in Bermuda Coinbase is suing the SEC for clarity Hong Kong embraces banking for crypto firms NYDFS Superintendent Harris denies that crypto caused the Signature collapse The Biden admin is backpedaling on whether crypto contributed to the banking crisis House Republicans probe financial regulators for info on de-banking of crypto The FBI has searched the home of FTX’s Ryan Salame We reminisce on FTX’ Crypto Bahamas conference Why is flare gas mining better than the alternative? Nic’s music royalties situation Nic resolves his differences with the Bitcoin 2023 conference Content mentioned: The Hong Kong Monetary Authority, Embracing new opportunities and accessing banking services Letter from Reps Hill, Huizenga, and McHenry to key financial regulators TVP, The Emerging Bitcoin-Native Venture Capital Landscape Sponsor notes: Coin Metrics presents State of the Network Foundations: Blockchain Addresses: This week's State of the Network kicked off the new Foundations series, which looks to present various technical aspects of blockchain technology in an approachable way. In the first report, Coin Metrics breaks down the concept of an 'address,' the fundamental unit of identity in the world of crypto.

Apr 21, 2023 • 34min
Weekly Roundup 04/21/23 (Harberger taxes, SEC v Bittrex, stablecoin hearing) (EP.419)
Matt and Nic are back with another week of news and deals. In this episode: We debate some curious new sponsors The Miami gas shortage Nic’s impressions of NFT NYC We review Eric’s Orb When do Harberger taxes work? CIV is hiring The SEC is suing Bittrex and alleges that Algorand and Dash are unregistered securities Gensler is skewered by Republican lawmakers in the House Financial Services hearing Gensler refuses to answer whether Ethereum is a security We review the House hearing on stablecoins The McHenry Waters stablecoin bill appears to be dead Does FedNow make stablecoins obsolete? Should stablecoin issuance be limited to banks? A stablecoin catch-22 Hester Peirce dissents on the proposed SEC exchange rule Content mentioned: CIV is hiring Austin Campbell’s written testimony to the House financial services committee Hester Peirce, Rendering Innovation Kaput: Statement on Amending the Definition of Exchange

Apr 19, 2023 • 42min
Dan Tapiero on Growth Investing in 2023 (EP.418)
Dan Tapiero, the founder of 10T Holdings and 1 Round Table Partners joins the show. In this episode we discuss: The performance of Bitcoin as a macro asset over the past year. The current regulatory environment and how the USA is losing its lead versus other countries in the digital asset ecosystem. The prospect of U.S. companies going public in non-U.S. jurisdictions. How Dan and his team approach growth stage investing. The secondary market and how Dan thinks about building ownership via secondary transactions. The LP landscape and how allocators are thinking about digital asset ecosystem managers. To learn more about Dan visit the 1RT website and follow Dan on Twitter
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